Samarco has implemented the Logical Locking System SBL in the Overhead Conveyors Belts to provide more safety to the process of locking energy in maintenance activities. The SBL, which is already installed in Concentrator 3 and Filtration of tailings at the Germano Complex, and in Mariana (MG) it was recently expanded to the TCLD, which has the function of transporting iron ore, extracted from the mine, to the concentration plants. The system works as an additional barrier to protect employees who work in maintenance activities and electricians who perform the lockout. The technology was developed by Samarco in partnership with the company IHM Stefanini.Automation engineer Alexandre Martins emphasized that the Logical Blocking System operates as an additional layer of protection. The belt conveyors also have an electrical block that acts directly on the power source.